Embedded.com has an overview of Android development
. The article looks at Android capabilities, particularly for non-phone applications, as well as what is needed to port it to non-ARM architectures. The information about "real-time" is essentially a suggestion to run Android and Linux along with an RTOS. "However, it would be better to think of Android as being a software platform for the construction of smart phones, as it is freely available and highly configurable. To be more precise, it is a software platform for building connected devices.
Android is an application framework on top of Linux. We will look at the details of the layers of the framework, shortly. It is supplied as open source code, but does not bind the user with the constraints of the GPL — there is no requirement for developers to make public any code developed using Android.
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